Razor blade sharpening device



P 1951 A. SAN CRISTOVAL 2,566,909 I RAZOR BLADE SHARPENING DEVICE Filed Aug. 10, 1949 INVENTOR.

ATTIJ R N EYS /3 A? flayzzszo 562/2 6711510 ya I av mym ar Patented Sept. 4, 19 51 UNITED": STATES 2,566,909 RAZOR BLADE SHARPENING DEVICE Augusto San Cristoval, Lima, Peru Application August 10, 1949, Serial No. 109,543

1 Claim. (Cl. 51-214) This invention relates to a sharpening instrument and more particularly to an instrument for sharpening razor blades.

The object of the invention is to provide a device for resharpening razor blades after they have become dull by continued use.

Another object of the invention is to provide a razor blade sharpening device which is compact whereby the device can be readily carried by the user, the sharpening device including a pair of grinding elements which can be adjusted in order to bring new sharpening faces into use so as to assure that the razor blade being sharpened is provided with a proper cutting edge.

A further object of the invention is to provide a razor blade sharpening device which is extremely simple and inexpensive to manufacture.

Other objects and advantages will b apparent during the course of the following description.

In the accompanying drawings, forming a part of this application, and in which like numerals are used to designate like parts throughout the same:

Figure 1 is a side elevational view of the razor blade sharpening device, according to the present invention;

Figure 2 is an end elevational view of the sharpening device;

Figure 3 is a side elevational view of one of the sharpening elements;

Figure 4 is an enlarged and elevational view of the sharpening device;

Figure 5 is an enlarged side elevational view of the sharpening device;

Figure 6 is a top plan view of the sharpening device;

Figure 7 is a sectional view taken on the line 1-1 ofFigure 5.

Referring in detail to the drawings, there is shown a, sharpening device which includes a pair of similar sharpening or grinding elements Ill and II. The sharpening elements In includes a plurality of spaced parallel teeth I2, while the other sharpening element II includes a similar plurality of spaced parallel teeth or ribs I3. The sharpening elements I0 and II may be fabricated of any suitable material, and the exterior surfaces of the teeth I2 and I3 are shaped arcuately or are curved as best seen in Figures 2 and 4. The grinding elements Ill and II define a channel I4 therebetween and the razor blade to be sharpened is positioned in the channel It and moves back and forth across the sharpening elements I0 and I I, in order to resharpen the cutting edge of the blade.

A means is provided for pivotally connecting the sharpening elements I0 and II together. It is to be noted that the teeth I3 of the sharpening lement II are interfitted or interposed between the teeth I2 of the sharpening element I0. These teeth are provided with registering openings through which projects a pintle or pin I5. Formed integral with one end of the pintle I5 is a head I6, there being a washer I'I interposed between the head I6 and the end of the grinding element I I. The other end of the pintle or pin I5 is threaded exteriorly for a portion of its length as at I8, and a flat nut I9 is arranged in threaded engagement with the portion [18, there being a washer 20 arranged on the pintle I5 adjacent the nut IS. The nut I9 serves to maintain parts of the sharpening device in assembled relation.

In use, the sharpening elements I0 and II are arranged so as to present or define a channel I4 into which the razor blade to be sharpened is inserted, and the sharpening device is held in the hand of the user. Then, the user moves the razor blade through the channel I4 so that the cutting edges of razor blade contacts the teeth I3 and I2 whereupon the edges of the razor blade will be resharpened. The curvature of the teeth I2 and I3 is such that a constant angle between the sharpening elements I0 and II will be maintained at all times. Further, the device will always present an efficient sharpening surface so as to insure the formation of the proper cutting edge on the razor blade. Thus, in the event that the sharpening surface on a portion of the teeth I2 and I3 becomes dull or over used, the user need only loosen the nut I9 whereupon the grinding elements It! and II can be pivoted to any desired position. Then, the nut I9 can then be again tightened to maintain the sharpening elements I0 and II immobile in their adjusted position. Further, both sides of the sharpening ele ments I0 and II can be used for resharpening the razor blade. In other words, the device of the present invention is constructed so that the grinding elements I0 and II can be reversed in order to insure that the sharpening elements function properly.

Further, the angle formed between the grinding elements It and II is constant because of the curved profile of the teeth I2 and I3.

The sharpening device of the present invention is compact and can be readily carried by the user and the cost of manufacture is very low.

What I claim:

A razor blade sharpening device comprising a pair of sharpening elements, each of said sharpening elements being provided with a plurality of spaced parallel teeth, said teeth having their exterior surfaces shaped arcuately, the teeth of one of said sharpening elements beinginterposed between the teeth of said other sharpening element, there being registering openings arranged in each of said teeth, pivot means including a pintle pmieetingahrough saidtizeethpandhaving a head arrange'diiionr one s end fthereof; the .aothei' end of said pintle being threaded exteriorly for a portion of its length, and a flat securing e1e-,-

ment arranged in threaded engagement with the threaded portion of said pintle. V

A. SAN

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number 

